Cyclone® V Device Handbook: Volume 1: Device Interfaces and Integration

ID 683375
Date 10/18/2023
Document Table of Contents

1.1.3. LAB Control Signals

Each LAB contains dedicated logic for driving the control signals to its ALMs, and has two unique clock sources and three clock enable signals.

The LAB control block generates up to three clocks using the two clock sources and three clock enable signals. An inverted clock source is considered as an individual clock source. Each clock and the clock enable signals are linked.

De-asserting the clock enable signal turns off the corresponding LAB-wide clock.

Figure 4. LAB-Wide Control Signals for Cyclone® V DevicesThis figure shows the clock sources and clock enable signals in a LAB.